I think there are some in this or another thread. I think it looks OK, but nothing special. It's certainly quite understated compared with the brash, bold and confident LM brand. Mind you. I'm not sure where they want to position their brand, and suspect they aren't sure either; the livery looks "quietly professional", the posters look 1980s, and there's presently a "no smoking or vaping" poster at Bletchley that isn't a world away from the VT joke "don't flush goldfish down the bog" thing.
I guess Abellio just aren't used to making up brands. Merseyrail got theirs from the PTE (and it's probably about the longest running rail branding scheme in the UK, dating from the 1980s), ScotRail was given theirs, and the rest just have the basic red, black and white. There is old-Northern, but perhaps the brand was Serco-led.